CN105157927B - A kind of test equipment detected for ball valve air-tightness and moment of torsion - Google Patents
A kind of test equipment detected for ball valve air-tightness and moment of torsion Download PDFInfo
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- CN105157927B CN105157927B CN201510574696.3A CN201510574696A CN105157927B CN 105157927 B CN105157927 B CN 105157927B CN 201510574696 A CN201510574696 A CN 201510574696A CN 105157927 B CN105157927 B CN 105157927B
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Abstract
The invention discloses a kind of test equipment detected for ball valve air-tightness and moment of torsion, including a stand, described stand interior side is provided with fixing seal lid, the offside provided with fixing seal lid side is provided with the movable sealing lid that can be translated to fixing seal lid inside stand, and movable sealing lid rear side is provided with translational drive mechanism；At least one closure is provided with test stomata in described fixing seal lid and movable sealing lid；Torsion-testing mechanism is additionally provided with inside described stand, torsion-testing mechanism is located between fixing seal lid and movable sealing lid, described torsion-testing mechanism includes a slide unit that can be slided between two closures.Current ball valve air tightness test efficiency is low, clamping is inconvenient, can not be while the problem of carrying out air tightness test and torsion-testing, proposes a kind of testing efficiency height, convenient mounting and clamping, can carry out the ball valve test equipment of air tightness test and torsion-testing simultaneously in order to solve by the present invention.
Description
Technical field
Set the present invention relates to ball valve test machine field, more particularly to a kind of test detected for ball valve air-tightness and moment of torsion
It is standby.
Background technology
The opening and closing element commonly used when ball valve is gas or liquid communication, is generally used for gas ductwork and water conservancy transport two is important
Industry, therefore, is required for carrying out sealing propertytest and torsion-testing before dispatching from the factory, not so has larger potential safety hazard.
Prior art is more traditional to the test method of ball valve, when carrying out air tightness test, generally uses sealing gasket or close
Seal is placed in the outside at ball valve two ends, while ball valve two ends are clamped in force application apparatus such as jack or hydraulic cylinders, so that close
Two ends of packing or sealing ring and ball valve, which are formed, to be sealed, and the ball valve after whole sealing is immersed in the water, then toward leading to inside ball valve
Enter compressed gas and examine its sealing property；Carry out torsion-testing when, typically directly using torque wrench, and can only eye observation,
Manually recorded numerical value.
Tested using with upper type, compare consumption manually, it is extremely inefficient, and corporate image is bad；Therefore, in the market
There are some Full-automatic testers for integrating air tightness test and torsion-testing.
The content of the invention
Current ball valve air tightness test efficiency is low, clamping is inconvenient, can not be while carrying out air-tightness in order to solve by the present invention
The problem of test and torsion-testing, propose a kind of testing efficiency height, convenient mounting and clamping, air tightness test and torque measuring can be carried out simultaneously
The ball valve test equipment of examination.
To achieve these goals, the present invention uses following technical scheme：One kind is used for ball valve air-tightness and moment of torsion is detected
Test equipment, an including stand, described stand interior side, which is provided with inside fixing seal lid, stand, is provided with fixing seal lid
The offside of side is provided with translational drive mechanism provided with the movable sealing lid that can be translated to fixing seal lid, movable sealing lid rear side；
At least one closure is provided with test stomata in described fixing seal lid and movable sealing lid；Also set inside described stand
There is torsion-testing mechanism, torsion-testing mechanism is located between fixing seal lid and movable sealing lid, described torsion-testing mechanism
Including a slide unit that can be slided between two closures, be sequentially provided with from lower to upper on the upside of described slide unit a motor,
One torque sensor and a turnbarrel, turnbarrel bottom are connected with torque sensor upper end, torque sensor lower end
Driven and rotated by motor；Locating rack of the described slide unit provided with two positioning ball valves, two locating rack symmetrical mirror pictures are set,
Described locating rack upper surface is an arc surface fitted with ball valve surface, and each locating rack both sides are respectively hinged with an anchor ear
Arm, is hinged with two anchor ear arm one end on a locating rack with locating rack, and the other end is each other provided with the lock that can be locked
Button；Described stand is provided with the downside of some parallel slide rails, described slide unit provided with the sliding block that can be slided along slide rail, described
The reply cylinder that driving slide unit is moved toward fixing seal lid direction is additionally provided with stand, cylinder one end is replied and is connected with stand, separately
One end is connected with slide unit.
Preferably, entering valve head provided with one on front side of described movable sealing lid, enter on the inside of valve head provided with test stomata, enter
Gas-flow closure circle is arranged with valve head lateral wall；Sealing pneumatic cylinder is helped provided with one on rear side of described movable sealing lid, it is described
Sealing pneumatic cylinder is helped to include being provided with dividing plate in a cylinder body, described cylinder body, inner chamber of cylinder block is divided into ball valve inlet chamber and close by dividing plate
Seal in power-assisted chamber, described ball valve inlet chamber and be provided with a power piston, described sealing power-assisted chamber helps sealing piston provided with one, institute
The power piston stated and helping between sealing piston is connected by a piston rod through dividing plate；The side of described ball valve inlet chamber
Wall is provided with the ball valve air inlet pipe connected with the test stomata that movable sealing is covered；Described power piston divides ball valve inlet chamber
Direct inlet chamber and change inlet chamber are divided into, described direct inlet chamber is connected with outside gas circuit；It is described help sealing piston with
Helping between sealing pneumatic cylinder inner face provided with a returning spring for power-assisted chamber side is sealed, described sealing power-assisted chamber is provided with reply bullet
Sealing tracheae is helped to connect by one between the cavity of spring and gas-flow closure circle.
Preferably, described enters positioning ring flat-plate or locating groove that valve head is provided with gas-flow closure circle.
Preferably, described movable sealing lid be located at at valve head peripheral be provided with sealing ring pad.
Preferably, the wedging that described fixing seal lid and movable sealing lid opposed inside surface is designed with annular is convex
Edge.
Preferably, the wedging flange inner that described fixing seal lid and movable sealing are covered is provided with sealing ring.
Preferably, being erect on described slide unit has a valve rod positioning sleeve, turnbarrel is located on the inside of valve rod positioning sleeve.
Preferably, being provided with fillet or chamfering on the inside of described valve rod positioning sleeve upper shed.
Preferably, described turnbarrel and torque sensor is are detachably connected, there is a ball turnbarrel upper end
There is a polygonal socket counterbore of valve valve rod matching, lower end, and torque sensor upper end is one polygon with turnbarrel lower end
The projection of shape jack matching.
Therefore, the present invention has the advantages that：1st, automatic clamping, test, more convenient operation；2nd, nothing can be carried out to enter
Ability of swimming air tightness test, it is more convenient to test；3rd, torsion-testing can be carried out simultaneously, improve production efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of torsion-testing mechanism of the present invention.
Fig. 3 is the structural representation of the turnbarrel bindiny mechanism of torsion-testing mechanism.
Fig. 4 is the structural representation of another angle of turnbarrel bindiny mechanism.
Fig. 5 is the structural representation of movable sealing lid in embodiment 1.
Fig. 6 is the structural representation that sealing pneumatic cylinder is helped in Fig. 5.
Fig. 7 is the structural representation of movable sealing lid in embodiment 2.
Fig. 8 is the structural representation of the test mode of embodiment 2.
1：Stand；2：Translational drive mechanism；3：Movable sealing lid；4：Fixing seal lid；5：Torsion-testing mechanism；6：It is sliding
Platform；7：Motor；8：Torque sensor；9：Turnbarrel；10：Locating rack；11：Anchor ear arm；12：Slide rail；13：Reply cylinder；14：
Valve rod positioning sleeve；15：Jack；16：Projection；17：Counterbore；18：Sealing ring pad；19：Gas-flow closure circle；20：Position ring flat-plate；21：
Ball valve；22：Help sealing tracheae；23：Enter valve head；24：Test stomata；25：Ball valve air inlet pipe；26：Outside gas circuit；27：Help sealing
Pneumatic cylinder；28：Power piston；29：Cylinder body；30：Piston rod；31：Help sealing piston；32：Returning spring；33：Seal power-assisted chamber；
34：Dividing plate；35：Ball valve inlet chamber；36：Change inlet chamber；37：Direct inlet chamber；38：Wedging flange；39：Sealing ring；40：Lock
Button.
Embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：Referring to Fig. 1 to Fig. 6, a kind of test equipment detected for ball valve air-tightness and moment of torsion, including one
Square stand 1, the described inner right side of stand 1 is provided with a fixing seal lid 4, and left side is living provided with a movable sealing lid 3
Dynamic sealing lid 3 is oppositely arranged with fixing seal lid 4, also, movable sealing lid 3 can be translated to fixing seal lid 4, close for clamping
The two ends of blocking valve 21, the rear side of movable sealing lid 3 is provided with the translational drive mechanism 2 of movable sealing lid 3, described translational drive mechanism
2 be cylinder or hydraulic cylinder；It is designed with testing stomata 24 on described fixing seal lid 4 and movable sealing lid 3, for carrying out ball valve
21 air tightness test.
Torsion-testing mechanism 5 is additionally provided with inside described stand 1, torsion-testing mechanism 5 is located at fixing seal lid 4 and activity
Between closure 3, described torsion-testing mechanism 5 includes a slide unit 6 that can be slided between two closures, the machine of slide unit 6
Structure includes the two parallel slide rails 12 set in the inner bottom surface of stand 1, and the downside of slide unit 6 is provided with the cunning that can be slided along slide rail 12
The reply cylinder 13 that driving slide unit 6 is moved toward the direction of fixing seal lid 4 is additionally provided with block, the stand 1 of the downside of slide unit 6, gas is replied
Cylinder body one end of cylinder 13 is connected with stand 1, and the cylinder axis one end for replying cylinder 13 is connected with slide unit 6., can when being tested
Cylinder 13 is replied by driving, whole slide unit 6 is pushed toward the direction of fixing seal lid 4 so that the one end of ball valve 21 and fixing seal
Lid 4 is fitted, then drives movable sealing lid 3, you can is clamped ball valve 21 and is tested.It is completed, need to will only replys cylinder 13 and receive
Return, whole slide unit 6 will return to two end cap centre position, be easy to operating personnel to change ball valve 21.The described upside of slide unit 6 is under
Up it is sequentially provided with a motor 7, a torque sensor 8 and a turnbarrel 9, the bottom of turnbarrel 9 and torque sensing
The upper end of device 8 is connected, and the lower end of torque sensor 8 is driven by motor 7 to rotate.Described turnbarrel 9 and torque sensor 8 are can
Dismounting connection, is conveniently replaceable the turnbarrel 9 of different size, adapts to different ball valves 21.Wherein, the upper end of turnbarrel 9 has one
There is a quadrangle jack 15 counterbore 17 of the individual valve rod of ball valve 21 matching, lower end, and the upper end of torque sensor 8 is one and rotary sleeve
The projection 16 of cylinder 9 lower end quadrangle jacks 15 matching.On described 6 four angles of slide unit by four root posts be supported by one it is padded
Platform, locating rack 10 of the padded platform provided with two positioning ball valves 21；Two symmetrical mirror pictures of locating rack 10 are set, and described determines
The position upper surface of frame 10 is an arc surface fitted with the surface of ball valve 21, and each both sides of locating rack 10 are respectively hinged with an anchor ear arm
11, it is hinged with two one end of anchor ear arm 11 on a locating rack 10 with locating rack 10, the other end is provided with each other can coordinate lock
Tight lock 40.When placing ball valve 21, first ball valve 21 is put on the arc surface of two locating racks 10, then by each locating rack 10
On two anchor ear arms 11 rotated around pin joint, around ball valve 21, finally locking lock 40, holds fixing ball valve 21 tightly；It is padded flat
Being provided with circular hole, circular hole in the middle of platform has positioning bearing, is embedded on the outside of positioning bearing in circular hole, inner side is arranged in the middle of padded platform
It is vertically oriented for turnbarrel 9 on turnbarrel 9.Also being erect on the padded platform of described slide unit 6 has a valve rod to determine
Position set 14, valve rod positioning sleeve 14 is to be provided with the inside of vertical placement, a cylinder for both ends open, the upper shed of valve rod positioning sleeve 14
Fillet, is positioned when being easy to ball valve 21 to place, and turnbarrel 9 is located at the inner side of valve rod positioning sleeve 14.
The described front side of movable sealing lid 3 enters valve head 23 provided with one, and it is a horizontal cylinder to enter valve head 23, enters valve head
Movable sealing lid 3 at 23 peripheries is provided with sealing ring pad 18, can be used in the end face of seal ball-valve 21, enters the inner side of valve head 23 and is provided with
Stomata 24 is tested, enters and gas-flow closure circle 19 is arranged with the lateral wall of valve head 23, and enters valve head 23 and is provided with gas-flow closure circle 19
Ring flat-plate 20 is positioned, prevents gas-flow closure circle 19 from offseting；The described rear side of movable sealing lid 3 helps sealing pneumatic cylinder 27 provided with one,
It is in cylinder to help sealing pneumatic cylinder 27, and described helps sealing pneumatic cylinder 27 to include a cylinder body 29, and the bosom position of cylinder body 29 is set
There is a dividing plate 34, dividing plate 34 is parallel with helping the sealing end face of pneumatic cylinder 27, and the inner chamber of cylinder body 29 is divided into ball valve inlet chamber 35 and sealing
A power piston 28 is provided with power-assisted chamber 33, described ball valve inlet chamber 35, described sealing power-assisted chamber 33 helps sealing provided with one
Piston 31, described power piston 28 and helping between sealing piston 31 is connected by a piston rod 30 through dividing plate 34；Institute
The side wall for the ball valve inlet chamber 35 stated is provided with the ball valve air inlet pipe 25 connected with the test stomata 24 on movable sealing lid 3；Institute
Ball valve inlet chamber 35 is separated into direct inlet chamber 37 and change inlet chamber 36, described direct inlet chamber by the power piston 28 stated
37 connect with outside gas circuit 26；It is described help sealing piston 31 and the side of sealing power-assisted chamber 33 help sealing pneumatic cylinder 27 inner face it
Between be provided with a returning spring 32, described sealing power-assisted chamber 33 is logical between cavity and gas-flow closure circle 19 provided with returning spring 32
Crossing one helps sealing tracheae 22 to connect.When outside gas circuit 26 is not supplied to direct inlet chamber 37, direct inlet chamber 37 and ball
Separated between valve air inlet pipe 25 by power piston 28, connected between change inlet chamber 36 and ball valve air inlet pipe 25；When outside gas circuit
When 26 pairs of direct inlet chambers 37 are supplied, power piston 28 is elapsed forward, treats that power piston 28 is moved past ball valve air inlet
After the interface of pipe 25, connected between direct inlet chamber 37 and ball valve air inlet pipe 25.
Described fixing seal lid 4 is consistent with the structure of movable sealing lid 3.
When being tested, first ball valve 21 is put on the arc surface of two locating racks 10, the middle valve rod of ball valve 21 is down, right
The insertion of counterbore 17 of quasi- turnbarrel 9 is placed, and the central axis that the central axis of ball valve 21 enters valve head 23 with closure is kept substantially
Overlap, then two anchor ear arms 11 on each locating rack 10 rotated around pin joint, around ball valve 21, finally locking latches 40,
Hold fixing ball valve 21 tightly；Start and reply cylinder 13, whole slide unit 6 is pushed toward the direction of fixing seal lid 4 so that the one end of ball valve 21
Fitted with fixing seal lid 4, restart the translational drive mechanism 2 of the rear side of movable sealing lid 3, movable sealing lid 3 is toward fixing seal
The translation of the direction of lid 4 clamps ball valve 21, and the priority of valve head 23 that enters of two closures stretches into the two ends of ball valve 21, enters the close of the periphery of valve head 23
Seal ring pad 18 is extruded with the end contact of ball valve 21, and realization is sealed first；Then, outside gas circuit 26, which is given, helps the straight of sealing pneumatic cylinder 27
Tap into air cavity 37 to supply, moved in propulsion power piston 28, help sealing piston 31 to move while driving, so that will sealing power-assisted chamber 33
Interior air is charged in gas-flow closure circle 19 so that the inwall of ball valve 21 is close in the expansion of gas-flow closure circle 19, realizes secondary seal.Treat
Power piston 28 is moved past after the interface of ball valve air inlet pipe 25, and direct inlet chamber 37 is connected with ball valve inlet chamber 35, outside
Gas circuit 26 after direct inlet chamber 37 from ball valve air inlet pipe 25 by entering in ball valve 21, as test gas.After test terminates,
Outside gas circuit 26, which is lost heart, to be depressured, and compressed gas part can be excluded along former road from ball valve air inlet pipe 25 in ball valve 21, simultaneously as close
There is returning spring 32 in envelope power-assisted chamber 33, help sealing piston 31 to retreat, pressure reduces in gas-flow closure circle 19, loses close
Effect is sealed, and then is let out except pressure in ball valve 21, an air tightness test is completed.
It when ball valve 21 is fixedly clamped by movable sealing lid 3 and fixing seal lid 4, will not rock, be conducive to carrying out ball valve
21 torsion-testings, and, it is necessary to carry out under a certain pressure when doing 21 torsion-testing of ball valve.Therefore, air tightness test process is being done
In intert carry out torsion-testing, can automatic open-close ball valve 21, realize ball valve 21 test cavity size switching, torsion can be measured again
Square data, effectively increase production efficiency.When carrying out torsion-testing, the He of torque sensor 8 is driven by the motor 7 on slide unit 6
Turnbarrel 9 rotates, and then drives the rotation of the valve rod of ball valve 21, and torque sensor 8 just can be by torque data automatic transport to control
Recorded in device.
Embodiment 2：Referring to Fig. 1 to Fig. 4, and Fig. 7, Fig. 8, the difference of the present embodiment and embodiment 1 is to change admittedly
Determine the structure of closure 4 and movable sealing lid 3, other contents are consistent.Fixing seal lid 4 and activity described in the present embodiment is close
Capping 3 is plane, and two closure opposed inside surfaces are designed with the wedging flange 38 of annular, and the inner side of wedging flange 38 is provided with
The sealing ring 39 that silica gel is made.When two closures are translated to ball valve 21, during pinch seal, the end of wedging flange 38 and ball valve 21
Face is contacted, and reaches certain sealing effectiveness by extruding insertion, then pass through the sealing ring 39 and ball valve 21 of the inner side of wedging flange 38
Secondary seal is realized in end face extruding.
Claims (6)
1. a kind of test equipment detected for ball valve air-tightness and moment of torsion, including a stand（1）, it is characterised in that：Described
Stand（1）Interior side is provided with fixing seal lid（4）, stand（1）Inside is provided with fixing seal lid（4）The offside of side is provided with can
To fixing seal lid（4）The movable sealing lid of translation（3）, movable sealing lid（3）Rear side is provided with translational drive mechanism（2）；It is described
Fixing seal lid（4）With movable sealing lid（3）In at least one closure provided with test stomata（24）；
Described stand（1）Inside is additionally provided with torsion-testing mechanism（5）, torsion-testing mechanism（5）Positioned at fixing seal lid（4）With
Movable sealing lid（3）Between, described torsion-testing mechanism（5）Including a slide unit that can be slided between two closures
（6）, described slide unit（6）Upside is sequentially provided with a motor from lower to upper（7）, a torque sensor（8）With a rotation
Sleeve（9）, turnbarrel（9）Bottom and torque sensor（8）Upper end is connected, torque sensor（8）Lower end passes through motor（7）Drive
Dynamic rotation；
Described slide unit（6）Provided with two positioning ball valves（21）Locating rack（10）, two locating racks（10）Symmetrical mirror picture is set
Put, described locating rack（10）Upper surface is one and ball valve（21）The arc surface of surface laminating, each locating rack（10）Both sides
Respectively it is hinged with an anchor ear arm（11）, with a locating rack（10）On two anchor ear arms（11）One end and locating rack（10）It is hinged,
The other end is each other provided with the lock that can be locked（40）；
Described stand（1）It is provided with some parallel slide rails（12）, described slide unit（6）Downside is provided with can be along slide rail（12）It is sliding
Dynamic sliding block, described stand（1）On be additionally provided with driving slide unit（6）Toward fixing seal lid（4）The reply cylinder of direction movement
（13）, reply cylinder（13）One end and stand（1）Connection, the other end and slide unit（6）Connection；
Described movable sealing lid（3）Front side enters valve head provided with one（23）, enter valve head（23）Inner side is provided with test stomata（24）,
Enter valve head（23）Gas-flow closure circle is arranged with lateral wall（19）；Described movable sealing lid（3）Rear side helps sealing provided with one
Pneumatic cylinder（27）, described helps sealing pneumatic cylinder（27）Including a cylinder body（29）, described cylinder body（29）It is interior to be provided with dividing plate（34）,
Dividing plate（34）By cylinder body（29）Inner chamber is divided into ball valve inlet chamber（35）With sealing power-assisted chamber（33）, described ball valve inlet chamber（35）
Inside it is provided with a power piston（28）, described sealing power-assisted chamber（33）Sealing piston is helped provided with one（31）, described power piston
（28）With help sealing piston（31）Between by one run through dividing plate（34）Piston rod（30）Connection；Described ball valve inlet chamber
（35）Side wall be provided with and movable sealing lid（3）On test stomata（24）The ball valve air inlet pipe of connection（25）；Described is dynamic
Power piston（28）By ball valve inlet chamber（35）It is separated into direct inlet chamber（37）With change inlet chamber（36）, described direct air inlet
Chamber（37）With outside gas circuit（26）Connection；Described helps sealing piston（31）With sealing power-assisted chamber（33）Side helps sealing pneumatic cylinder
（27）A returning spring is provided between inner face（32）, described sealing power-assisted chamber（33）Provided with returning spring（32）Cavity with
Gas-flow closure circle（19）Between help sealing tracheae by one（22）Connection；
Described slide unit（6）Upper setting has a valve rod positioning sleeve（14）, turnbarrel（9）Positioned at valve rod positioning sleeve（14）It is interior
Side；
Described turnbarrel（9）And torque sensor（8）To be detachably connected, turnbarrel（9）There is a ball valve upper end
（21）The counterbore of valve rod matching（17）, there is a polygonal socket lower end（15）, torque sensor（8）Upper end is one and rotation
Sleeve（9）Lower end polygonal socket（15）The projection of matching（16）.
2. a kind of test equipment detected for ball valve air-tightness and moment of torsion according to claim 1, it is characterised in that：Institute
That states enters valve head（23）It is provided with gas-flow closure circle（19）Positioning ring flat-plate（20）Or locating groove.
3. a kind of test equipment detected for ball valve air-tightness and moment of torsion according to claim 1, it is characterised in that：Institute
The movable sealing lid stated（3）It is located at into valve head（23）Sealing ring pad is provided with periphery（18）.
4. a kind of test equipment detected for ball valve air-tightness and moment of torsion according to claim 1, it is characterised in that：Institute
The fixing seal lid stated（4）With movable sealing lid（3）Opposed inside surface is designed with the wedging flange of annular（38）.
5. a kind of test equipment detected for ball valve air-tightness and moment of torsion according to claim 4, it is characterised in that：Institute
The fixing seal lid stated（4）With movable sealing lid（3）On wedging flange（38）Inner side is provided with sealing ring（39）.
6. a kind of test equipment detected for ball valve air-tightness and moment of torsion according to claim 1, it is characterised in that：Institute
The valve rod positioning sleeve stated（14）Fillet or chamfering are provided with the inside of upper shed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510574696.3A CN105157927B (en) | 2015-09-11 | 2015-09-11 | A kind of test equipment detected for ball valve air-tightness and moment of torsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510574696.3A CN105157927B (en) | 2015-09-11 | 2015-09-11 | A kind of test equipment detected for ball valve air-tightness and moment of torsion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105157927A CN105157927A (en) | 2015-12-16 |
| CN105157927B true CN105157927B (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510574696.3A Active CN105157927B (en) | 2015-09-11 | 2015-09-11 | A kind of test equipment detected for ball valve air-tightness and moment of torsion |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844683B (en) * | 2018-08-27 | 2024-01-26 | 江苏诚功阀门科技有限公司 | High-precision intelligent torque ball valve test device |
| CN110736593B (en) * | 2019-11-19 | 2021-07-23 | 重庆前卫科技集团有限公司 | Quality detection method for direct transmission set |
| CN112728119A (en) * | 2020-12-28 | 2021-04-30 | 安徽银汉机电科技有限公司 | High-sensitivity electric control detection valve for monitoring products on automatic production line |
| CN113102278B (en) * | 2021-03-04 | 2023-01-17 | 辽宁大唐国际沈抚热力有限责任公司 | Valve leakage-proof detection system and detection process |
| CN113324862B (en) * | 2021-07-13 | 2022-05-06 | 广东省医疗器械质量监督检验所 | Simulated clinical fatigue resistance testing method and device for peritoneal dialysis external connection tube |
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| KR20120004423U (en) * | 2010-12-13 | 2012-06-21 | 주식회사 한국가스기술공사 | internal leakage check device and method of ball valve |
| CN202362134U (en) * | 2011-12-01 | 2012-08-01 | 机化阀门(沈阳)有限公司 | Valve pressure and torque comprehensive testing device |
| CN203337334U (en) * | 2013-08-06 | 2013-12-11 | 宁波东生建材有限公司 | Ball valve leakage detection machine |
| CN203848989U (en) * | 2014-03-28 | 2014-09-24 | 北京京燃凌云燃气设备有限公司 | Detection apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20120004423U (en) * | 2010-12-13 | 2012-06-21 | 주식회사 한국가스기술공사 | internal leakage check device and method of ball valve |
| CN202362134U (en) * | 2011-12-01 | 2012-08-01 | 机化阀门(沈阳)有限公司 | Valve pressure and torque comprehensive testing device |
| CN203337334U (en) * | 2013-08-06 | 2013-12-11 | 宁波东生建材有限公司 | Ball valve leakage detection machine |
| CN203848989U (en) * | 2014-03-28 | 2014-09-24 | 北京京燃凌云燃气设备有限公司 | Detection apparatus |
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| Publication number | Publication date |
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| CN105157927A (en) | 2015-12-16 |
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